Periodic Table Trends and Similarities. Trends of the Periodic Table: At the conclusion of our time together, you should be able to: 1. Give a trend across.

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Presentation on theme: "Periodic Table Trends and Similarities. Trends of the Periodic Table: At the conclusion of our time together, you should be able to: 1. Give a trend across."— Presentation transcript:

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Trends of the Periodic Table: At the conclusion of our time together, you should be able to: 1. Give a trend across and down the Periodic Table for metallic characteristics, reactivity, atomic radius and ion radius, electron affinity, ionization energy, electronegativity, density, melting point and boiling point 2. Pick the element with the higher trend above from a list of several elements

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Electron Affinity The energy change that occurs when a neutral atom acquires an electron. Most electron affinity values are negative. Energy is released from the atom. Atoms that really want another electron tend to be more negative.

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Ionization Energy The energy required to remove one electron from a neutral atom. The closer to the nucleus, the harder to pull the electron. The farther away, more interference from other electrons, therefore, the easier it is to pull the electron.

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Boiling Point Temperature at which a system moves from the liquid state to the gaseous state. The external pressure pushing into the liquid is equal to the internal pressure pushing out of the liquid.

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Melting Point The temperature at which a solid becomes a liquid. The external pressure pushing into the solid is equal to the internal pressure pushing out of the solid.

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Boiling/Melting Point Trends Top to Bottom Left to Right Increases except Groups 1, 2, 12, 13, 14 Increases then Decreases

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Trends of the Periodic Table: Let’s see if you can: 1. Give a trend across and down the Periodic Table for metallic characteristics, reactivity, atomic radius and ion radius, electron affinity, ionization energy, electronegativity, density, melting point and boiling point 2. Pick the element with the higher trend above from a list of several elements